Wrench.



No. 756,565. PATENTED APR. 5, 1904. T. H. BARRY.

WRENCH.

APPLIGATION FILED JUNI: 27,1903.

N0 MODEL.

A TTOHNE Y S.

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UNITED STATES Patented April 5, 1904.

THOMAS H. BARRY, OF EMPlRE, OREGON.

WRENCH. i

SPECIFICATION forming' part of Letters Patent No. 756,565,` dated April5, 1904.

'Application ined June 27,1903. serai No. 163,344. (No model.)

To tl whom, it may concern:

Be itknown that I, THOMAS H. BARRY, a citizen of the United States, anda resident of Empire,in thecounty of Coos and State of Oregon, haveinvented a new and Improved Wrench, of which the following is a full,clear, and exact description.

This invention relates to a class of Wrenches havinga fixed jaw on theend of a handle-lever, a sliding jaw on the lever, and means for holdingthe sliding jaw at a selected point on the lever.

The object of the invention is to provide novel detailsof constructionfor a Wrench of the indicated class, Which afford a very convenientimplement, capable of receiving instant adjustment, adapted forautomatic closure, and which Will operate reliably at any point ofopened adjustment.

Theinvention consists in the novel construction and combination ofparts, as is hereinafter described, and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in-Which similar characters of reference indicatecorresponding parts in all the figures.

Figure l is a perspective view of the improved Wrench. Fig. 2 is alongitudinal sectional vieW showing interior details. Fig. 3 is aperspective view of the slidable jaw and the adjusting-rack carried bysaid jaw, and Fig. 4 is a perspective View of a spring-dog that is adetail of the invention.

The lever 5, which is of suitable length proportioned to conform withthe desired capacity of the tool, is rectangular in cross-section and atone end is provided with a lixed jaw 6, disposed transversely, as usual.A shank 5fL is formed on the handle-lever 5 by reduction of the Width ofsaid bar,tha`t produces a shoulder ct thereon at a suitable distancefrom the end of the shank, which distance is preferably equal in lengthto that of the handle-block or grip-piece 7, which may be of Wood ormetal.

A slidable jaw is furnished as a Wrench member complementary to thefixed jaw 6,

and comprises a jaw-limb 8 and a rectangular loop 8"', the opening inthe latter beingof-suchdimensions and form as Will permit the body ofthe handle-lever 5 to fit loosely therein and adapt the looped jaw toslide on the lever -From the jaw-limb 8, adjacent 'to the rectana gularloop 8, a rack-bar 9 extends at a right angle to the Working face of thejaw, and upon "u the edge of the rack-bar opposite the one whichcontacts with the handle-lever when the parts of the Wrench areassembled a series of c is formed to receive the shank 5 a, thatlitsneatly therein, and it will be seen that when the shank is fullyinserted into the handleblock the shoulder a Will impinge upon the innerend of the handle-block and the end of the shank become flush With theouter end of the handle. It may here be explained that if thehandle-block is of hard Wood a Washerplate l() may be embedded in oneside thereof, having holes formed therein at proper points for thepassage therethrough of screws or rivets (Z, that also pass throughalined perforations e, formed in the shank 5 and the handle-block` andwhen inserted serve to secure the handle upon the shank of thehandlelever 5- In the handle-block 7, parallel with and adjacent to thelongitudinal aperture c, a passage c is formed, this passage beingadapted to receive the portion of the bar 9 Whereon the teeth b areformed. The passage c' does not extend entirely through the handle-block7, but aords a chamber c2, extending from the inner extremity of therack-bar 9,v Wherein a coiled spring' l2 is placed. Two studs g g areformed, respectively, on the inner end of the rack-bar 9 and the endWall of the chamber c2, these studs entering the ends of the spring 12,so as to hold the latter in position for the exertion of direct pressureon the y rack-bar, which will be forced by the spring toward the fixedjaw 6, so as to impinge the jaw 8 thereon, this occurring when thespring is permitted to expand freely.

The preferred means for detachably securing the jaw 8 at any point ofretracted adjustment consists in the provision of a springdog, which, as.shown in Figs. 2 and 4, consists of a preferably curved resilient arm13, fitted upon the handle-block 10, whereon it is secured by one end,as shown at h in Figs. 1 and 2, said arm at its opposite end having atoothed dog 14 projected laterally therefrom, which loosely occupies anopening z', formed in the handle-block opposite the rack-teeth b.

rIhe set of the spring-arm 13is such that the dog 14 is normally pressedtoward the teeth b on the rack-bar 9 and engages its teeth b between theteeth opposite which it mayY lie. On the end -of the arm-13 adjacent toIthe dog 14 a catch-lip 'In is formed, that is shaped for convenientmanipulation to press it outward, and thus remove the teeth b fromengagement with the rack-teeth b, as indicated by dotted lines in Fig.2. y As shown in Fig.

2, the jaw -limb 8 projects at its free end slightly beyond the adjacentend of the fixed jaw 6, so as to provide an offset fn.

When the wrench is to be adjusted to engage an object, such as ascrew-nut or the head of a bolt between the jaws 6 and 8, assuming thatthe slidable jaw is in closed adjustment; the wrench .is grasped by itshandle 7 and the slidable jaw at the offset n is pressed upon a fixedobject-such, for example, as a nut that the wrench is to be adjusted toreceive between its jaws. Pressure is now applied simultaneously withthe manipulation of the catchlip m for release of the dog 14 from therackteeth Z2, whereupon the jaw 8 will be pressed away from the jaw 6 adesired distance, thus compressing the spring 12. Then a release of thecatch-lip will permit stress of the springarm 13 to press the teeth b ofthe dog 14 into engagement with the teeth b on the rack 9, and thus lockthe rack-bar and jaw thereon at a desired point of retractedadjustmemnt.

As the teeth b b are parallel on their sides when they are engaged, apositive lock of the jaw 8 is effected, sothat the wrench may be usedwith full effect for turning an obj ectwith which it may be engaged.

Obviously the release of the dog 14 by manipulation of the catch-lip mwill permit stress of the spring 12 to expand and force the jaw 8 intocontact with the jaw 6 or into closed condition.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination with a handle-lever having a fixedjaw at one end, and a shank at the opposite end that is reduced in widthaording a shoulder, of a jaw mounted to slide upon the handle-lever, arack-bar extended from the slidable jaw and having teeth on one edgenear its free end, a handle-block apertured to receive the shank andabutting against the shoulder thereon, means for securing thehandleblock upon the shank, said block having a longitudinal chambertherein which receives the toothed portion of the rack-bar, a resilientarm attached by one end upon the outer side of the handle-block andprojecting above the rack-teeth, a toothed dog on the free end of theresilient arm adapted to mesh with the lteeth on the rack-bar, and meansfor manual release of the dog therefrom.

2. The combination with a handle-lever havy ing a fixed jaw on one end,and a shank on the opposite end thereof reduced in width, affording ashoulder, of a slidable jaw mounted upon the handle-lever and having itsfree end projected therefrom farther than the ixedjaw, a rack-barextended from the slidable jaw and having teeth on one edge near itsfree end, said teeth having parallel sides, a handle-blocklongitudinally apertured to receive the shank of the lever and abuttingupon the shoulder thereon, the handle-block and shank having a pluralityof perform-ions, screws engaging said perforations, the block having alongitudinal chamber parallel with the aperture therein, said chamber atone end receiving the toothed end of the rack-bar, an expansible springin the chamber, pressing upon the'end R. W. MARSHALL, ROBERT E. SHINE.

IOO

